ECQ-E6155KZ Equivalent & Substitute Parts

Part Overview

The ECQ-E6155KZ is a 1.5 µF film capacitor rated for 630V DC operation with polyester metallized dielectric construction. Designed for general-purpose applications, this radial through-hole component features ±10% capacitance tolerance and operates across -40°C to 85°C. The part is currently obsolete, necessitating identification of functionally equivalent alternatives to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

ECQ-E6155KZ

Panasonic Electronic ComponentsIn Stock: 1057ECQ-E6155KZ Datasheet

Current PartRFQ

ECQ-E6155KF

Panasonic Electronic ComponentsIn Stock: 1401ECQ-E6155KF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECQ-E6155KZ is determined by strict equivalence across the following critical parameters:

• Capacitance Value: Must be 1.5 µF (no tolerance deviation acceptable for direct substitution)
• DC Voltage Rating: Must be 630V or higher
• Dielectric Type: Polyester, metallized construction required
• Mounting Configuration: Through-hole radial package mandatory
• Termination Style: PC pins required
• Tolerance: ±10% acceptable

The ECQ-E6155KF meets all substitution criteria. While it exhibits dimensional differences and an extended operating temperature range (-40°C to 105°C versus -40°C to 85°C), these variations do not preclude functional equivalence. The substitute maintains identical electrical specifications and dielectric composition, ensuring circuit-level compatibility.

Parameter Comparison

Engineering Selection Recommendations

The ECQ-E6155KF is the direct functional equivalent for ECQ-E6155KZ replacement. Both components share identical electrical characteristics: 1.5 µF capacitance, ±10% tolerance, 630V DC rating, and polyester metallized dielectric construction.

The ECQ-E6155KF offers two significant advantages over the obsolete ECQ-E6155KZ:

1. Active Product Status: The substitute is currently in active production with confirmed inventory availability (1298 pcs), ensuring long-term supply chain reliability.

2. Regulatory Compliance: The ECQ-E6155KF is ROHS3 compliant and REACH unaffected, meeting modern environmental and regulatory requirements. The original ECQ-E6155KZ is RoHS non-compliant.

Physical dimensions differ between the two parts. The ECQ-E6155KF is more compact (31.00mm L x 15.30mm W versus 42.50mm L x 17.00mm W) with reduced lead spacing (27.50mm versus 38.50mm). PCB layout verification is required to confirm mechanical fit within existing designs.

The extended operating temperature range of the ECQ-E6155KF (-40°C to 105°C versus -40°C to 85°C) provides additional thermal margin and does not restrict application scope.

Frequently Asked Questions (FAQ)

Q: Can ECQ-E6155KF directly replace ECQ-E6155KZ in existing circuits?

A: Electrical substitution is valid. Both components have identical capacitance (1.5 µF), tolerance (±10%), DC voltage rating (630V), and dielectric composition (polyester, metallized). Physical dimensions differ; PCB layout compatibility must be verified before implementation.

Q: What is the primary reason for substitution?

A: The ECQ-E6155KZ is obsolete. The ECQ-E6155KF is an active product with confirmed availability and modern regulatory compliance (ROHS3).

Q: Are there dimensional constraints for using the ECQ-E6155KF?

A: Yes. The ECQ-E6155KF is smaller (31.00mm L x 15.30mm W) with closer lead spacing (27.50mm) compared to the ECQ-E6155KZ (42.50mm L x 17.00mm W, 38.50mm lead spacing). Verify PCB footprint compatibility and clearance requirements before design implementation.

Q: Does the extended temperature range of ECQ-E6155KF affect compatibility?

A: No. The ECQ-E6155KF operating range (-40°C to 105°C) encompasses the original specification (-40°C to 85°C), providing equivalent or improved performance across all intended operating conditions.

Q: What is the AC voltage rating difference between the two parts?

A: The ECQ-E6155KZ does not specify an AC voltage rating. The ECQ-E6155KF is rated for 250V AC. For DC-only applications, this difference is not relevant. For AC or mixed-signal applications, the 250V AC rating of the substitute must be verified against circuit requirements.